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Geomagnetic field influences upward movement of young Chinook salmon emerging from nests.

ABSTRACT: Organisms use a variety of environmental cues to orient their movements in three-dimensional space. Here, we show that the upward movement of young Chinook salmon (Oncorhynchus tshawytscha) emerging from gravel nests is influenced by the geomagnetic field. Fish in the ambient geomagnetic field travelled farther upwards through substrate than did fish tested in a field with the vertical component inverted. This suggests that the magnetic field is one of several factors that influences emergence from the gravel, possibly by serving as an orientation cue that helps fish determine which way is up. Moreover, our work indicates that the Oncorhynchus species are sensitive to the magnetic field throughout their life cycles, and that it guides their movements across a range of spatial scales and habitats.

SUBMITTER: Putman NF

PROVIDER: S-EPMC5830669 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Geomagnetic field influences upward movement of young Chinook salmon emerging from nests.

Putman Nathan F NF Scanlan Michelle M MM Pollock Amanda M AM O'Neil Joseph P JP Couture Ryan B RB Stoner Joseph S JS Quinn Thomas P TP Lohmann Kenneth J KJ Noakes David L G DLG

Biology letters 20180201 2

Organisms use a variety of environmental cues to orient their movements in three-dimensional space. Here, we show that the upward movement of young Chinook salmon (<i>Oncorhynchus tshawytscha</i>) emerging from gravel nests is influenced by the geomagnetic field. Fish in the ambient geomagnetic field travelled farther upwards through substrate than did fish tested in a field with the vertical component inverted. This suggests that the magnetic field is one of several factors that influences emer ...[more]

PMID: 29438054

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Geomagnetic field influences upward movement of young Chinook salmon emerging from nests.

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Geomagnetic field influences upward movement of young Chinook salmon emerging from nests.

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